Research has shown that racquet sports--tennis, squash, racquetball etc. --are a leading cause of eye injury, sometimes permanent.  Below is a list of ways to reduce the chance of sports- related eye injuries.

Wear eye quards when playing racquet sports.
These eye guards should be made with molded polycarbonate forms and lenses.
Never wear regular prescription eyeglasses instead of eye guards.
Wear contact lenses only in combination with eye guards.

Begin. Force yourself to begin the project.  It is the hardest part, but once you do, you are on your way.
Do one thing at a time.  Don't start several projects at once.  Do the hardest thing first.  This makes the easier tasks a reward.
Put  your number one priority front and center on your desk for following morning.
Decide when your mind is the clearest--morning, afternoon, or evening.  Use your best time or the day for planning, when you are more inclined to have clear thoughts.